Platform for truck bed



FIG. 1 is a perspective view of a platform for truck bed showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof; and,

FIG. 6 is a right side view thereof.

The left side view is a mirror image of FIG. 6. 

The ornamental design for a platform for truck bed, as shown and described. 